The 2026 Budget Reckoning: Why Your Clients’ Investment Math Just Changed

Starting July 1, 2026, negative gearing deductions are capped at $10,000 annually and the capital gains tax discount for properties held over 12 months drops from 50% to 25%. This is a structural tax shift that rewrites the arithmetic for every new property acquisition. Investors should prepare for a borrowing capacity haircut of 5% to 15% as lenders bake these reduced tax benefits into their serviceability models ¹.

The $10,000 cap and the CGT squeeze

The new rules act as a dual-action brake on property investment. Consider a client who buys a $620,000 townhouse today and expects $14,000 in annual rental losses. Under the current regime, the full loss offsets their taxable income. After July 1, 2026, the $10,000 cap traps $4,000 of those losses. Assuming a 37% marginal tax rate, that is a $1,480 annual hit to their cash flow. That reduction in net disposable income translates to roughly $40,000 less in borrowing power on a standard lender calculator ².

Then there is the CGT change. Halving the discount from 50% to 25% makes holding assets for the long term more expensive. For an investor planning to sell a property that has appreciated by $200,000, this policy change could add tens of thousands to their final tax bill. Lenders are recalibrating their risk models, treating investor cash flows with far more scepticism than they did in 2025 ³. I have seen credit teams already flagging files that rely heavily on projected tax savings. They aren't taking chances on thin margins anymore.

The grandfathering trap: why a simple refinance can hurt

Properties settled before July 1, 2026, remain protected under the old tax rules. However, the protection is not bulletproof. If a client refinances to a new lender or significantly restructures their loan after the cut-off date, they risk triggering a reassessment that pulls the asset under the new tax regime. Many brokers assume grandfathering is a permanent feature of the loan agreement, but it is effectively a status that applies to the acquisition date of the property, not the life of the mortgage product.

Think of it as a ticking clock. If a client attempts to chase a lower rate through a full refinance after the deadline, they may inadvertently lose their $10,000 deduction cap exemption and their full CGT discount. A simple product transfer or rate negotiation that avoids changing the loan's legal structure is generally the safer route to maintain legacy benefits. If a refinance is non-negotiable, tell the client they are potentially opting into the new tax landscape. It is a dangerous game to play if they don't fully grasp the implications of changing their contract structure.

Shifting the portfolio strategy

Everyone expects these changes to cool investor demand, but the real impact is a flight to new construction. The policy is designed to encourage supply, and we expect lenders to offer more favourable serviceability treatment for new builds to align with government goals. Clients who are currently in the market for established dwellings should be urged to settle before June 30, 2026. The financial difference between settling on June 25 versus July 5 is a permanent change in their return on investment.

FAQs

Are existing negatively geared properties affected? No. Properties purchased before July 1, 2026, are grandfathered. However, any major refinance or portfolio restructure post-July 1 risks triggering a review that could pull those assets under the new rules.

Do these tax changes mean my clients' borrowing capacity is actually going to drop? Yes. Investors should expect a borrowing capacity haircut of 5% to 15% because lower tax benefits force a reassessment of net disposable income. Lenders are already baking this into their Q3 2026 projections.

What should I tell clients considering an investment purchase now? Advise them to complete settlements before June 30, 2026, to lock in current tax benefits. If a later settlement is unavoidable, recalculate their serviceability using the new $10,000 cap to ensure they still qualify for the loan.

What to do next

Review your investor client list today to identify anyone with a pending purchase or a high-LVR portfolio that is currently relying on negative gearing. Run their borrowing capacity under the $10,000 cap scenario to see who needs to settle before June 30.

If you're running scenarios like this and the document chase is eating your week, the Halo Fortune MM team handles the operational layer — Halo Flex covers self-employed alt-doc and low-deposit deals where the majors decline; Halo Chat (broker-only RAG, built by Halo Fortune) returns cited lender-policy answers in under 30 seconds.

👉 Apply for Halo Fortune broker access — free, 5-minute submission →

Related reading

• Tax shifts on July 1: How the 2026 Federal Budget rewrites investor serviceability
• May 2026 RBA Rate Hike: Serviceability, Self-Employed Clients, and the Refinance Cliff
• Your database is hiding a 15% revenue surge. Here is how to find it.

Sources

Footnotes

1. https://www.rba.gov.au/statistics/cash-rate/ , Reserve Bank of Australia , Cash Rate Target ↩

2. https://www.macrobusiness.com.au/2026/05/chicken-chalmers-embeds-property-class-war/ , Chicken Chalmers embeds property class war ↩

3. https://www.macrobusiness.com.au/2026/05/budget-and-rba-outlook-for-different-countries/ , Budget and RBA outlook for different countries ↩